Cable terminal unit using bit set for selectively enabling a plu

Details Cable terminal unit using bit set for selectively enabling a plu Cable terminal unit using bit set for selectively enabling a plu

1994-12-22

1998-05-12

Lee, Thomas C.

395832, G06F 13362

Patent

active

057520801

ABSTRACT:
A terminal unit for use within a digital cable system having a head end control unit and a cable and related method for upgrading hardware functions. According to a preferred embodiment, the terminal unit is provided and comprises a processor and an optional hardware function, wherein the hardware function is enabled or disabled. The terminal unit further comprises a memory for storing a bit set representative of the enabled or disabled status of the optional hardware function. The bit set is set to enable or disable the optional hardware function in accordance with a control signal received by the terminal unit from the head end control unit. The terminal unit also enables or disables the optional hardware function in accordance with the bit set. The terminal unit and the head end control unit are connected to the cable, and the control signal is broadcasted with the head end control unit via the cable to the terminal unit.

REFERENCES:
patent: 4367557 (1983-01-01), Stern et al.
patent: 4468731 (1984-08-01), Johnson et al.
patent: 4682367 (1987-07-01), Childress et al.
patent: 4802119 (1989-01-01), Heene et al.
patent: 4901274 (1990-02-01), Maejima et al.
patent: 5220673 (1993-06-01), Dalrymple et al.
patent: 5257352 (1993-10-01), Blanck et al.
patent: 5289271 (1994-02-01), Watson
patent: 5297272 (1994-03-01), Lu et al.
patent: 5321827 (1994-06-01), Lu et al.
patent: 5359419 (1994-10-01), Kawasaki
patent: 5359608 (1994-10-01), Belz et al.
patent: 5361358 (1994-11-01), Cox et al.
patent: 5365587 (1994-11-01), Campbell et al.
patent: 5410726 (1995-04-01), Bagai et al.
patent: 5450576 (1995-09-01), Kennedy
patent: 5657448 (1997-08-01), Wadsworth et al.
Zimmermann, Philip, Pretty Good Privacy (PGP) Public Key Encryption for the Masses, User's Guide Essential Topics, vol. I, Aug. 31, 1994.
Zimmermann, Philip, Pretty Good Privacy (PGP) Public Key Encryption for the Masses, User's Guide Special Topics, vol. II, Aug. 31, 1994.

Affiliated with

Also associated with

Rating

Cable terminal unit using bit set for selectively enabling a plu does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cable terminal unit using bit set for selectively enabling a plu, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cable terminal unit using bit set for selectively enabling a plu will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-995169